[cc-by-human]: https://creativecommons.org/licenses/by/4.0/
[cc-by-legal]: https://creativecommons.org/licenses/by/4.0/legalcode
[concept-maps]: http://carpentries.github.io/instructor-training/05-memory/
-[contact]: mailto:lessons@software-carpentry.org
+[email]: mailto:lessons@software-carpentry.org
[contrib-covenant]: http://contributor-covenant.org/
[contributing]: {{ site.github.repository_url }}/blob/gh-pages/CONTRIBUTING.md
[cran-checkpoint]: https://cran.r-project.org/web/packages/checkpoint/index.html